<body>
    <section class="meio ">
        <div class="main">
            <div class="cola">
                <img src="<?php echo base_url('application/views/'); ?>/img/text.png" />
            </div>

            <div class="colb">
                
                <?php echo form_open('main/login'); ?>
                <?php echo validation_errors(''); ?>
                <label>
                    Acesse sua <span>conta</span>
                </label>

                <label for="username">
                    Usuário &nbsp;<?php echo form_input('username'); ?>
                </label>
                
                <label for="password">
                    Senha &nbsp;<?php echo form_password('password'); ?>
                </label>
                
                <label>
                    <?php
                    $data = array('value'       => 'Acessar', 'class'       => 'bt');
                    echo form_submit($data); ?>
                </label>
                
                <?php echo form_close(); ?>
            </div>
            <div class="clear"></div>
        </div>
    </section>
</body>
</html>